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(No Model.) 3 Sheets-Sheet 1. 0. BOTTER.

PAPER MACHINE.

(No Model.) 3 Sheets-Sheet. 2.

0. 'BOTTER.

PAPER MACHINE.

No. 280,123. Patented June 26, 1888.

ZM Z f %M( f (N0 Model.) 3 Sheets-Sheet 3.

0. B'0' TER. PAPER MACHINE.

No. 280,123. I Patented June 26, 1883.

ject of my invention.

UNITED STATES PATENT @FFICE.

CARL BOTTER, OF OBER-URSEL, PRUSSIA, ASSIGNOR TllO-LEOPOLD ZEYEX, OFRAGUHN, ANHALT, GCRMANY.

PAPER-MACHINE.

SPECIFICATION forming part of Letters Patent No, 280,123, dated June 26,1883.

Application filed March 8, 1883. (No model.) Patented in BelgiumFebruary 28, 1883, No. (50,588; "in France February 28, 1883, and

in England February .28. 1883, No. 1.084.

to make and use the same, reference being had to the accompanyingdrawings, and to letters or figures of reference markedthereon, whichform a part of this specification.

In view of the limited tenuity of the fibrous materials now employed inthe manufacture of paper, and the rapidity with which the paper is madeto travel through the paper-making machines, repeated breaks occur,which are due either to irregularities in the function of the primemotor or in the mechanism of the machines, as well as to the variations(due to atmospheric influences) in the lengthsflof the driving-belts.

The object of my invention is to avoid these frequent breaks by mountingthe feed or guiderolls in. resilient bearings that will counteract andcompensate any irregularity in the function of the operating mechanism,and consequently in the tension of the paper lengths,

between two such rolls or sets of rolls, hereinafter fully described,and shown in the accompanying drawings, in which+ Figures 1 and 2 showin elevation and by a plan view, respectively, one construction ofappliances by means of which I attain the ob Fig. 3 is an under sideview of the bearing proper. Fig. 4 is a side elevation illustratingmeans for adjusting the tension of the springs. Figs. 5 and 6 show inelevation other constructions of appliances for attaining the desiredresults. Fig. 7 is a sectional side elevation, S aplan view, and Fig. 9a transverse section, of my improved bearing, showing means forannulling the clastic resistance of the weight of the guide-rolls.

Likeletters of reference indicate like parts in the above figures ofdrawings.

In papermaking machines as heretofore constructed the guide-rolls aremounted in bearings rigidly connected to their standards or to theframing of the machine; and if any irregularity occurs in the speed ofthese rolls, or in the speed of any of the other operating devices, orin that of the prime motor, the paper at.-some point is unduly stretchedand breaks, causing serious losses both in material. and time.

This invention is designed to reduce to a minimum the occurrence ofthese breaks, it not to 'overcome the difficulty entirely, by mountingthe rolls in bearings adapted to yield to any excess in the normaltension of the paper in any direction, or to take up the slack, if suchshould occur. arious means may be employed for eti'ecting the desiredresult; but whatever may be the nature of the mechanism employed forimparting the necessary yielding or resilient properties to thebearings, it is desirable that the movements of the latter should be asfree as possible upon the supporting devices for such bearings byreducing the friction upon such supporting devices to a minimum. This isbest effected by mounting the bearing B upon anti-friction rollers 11,as plainly shown in Fig. 3. To impart the necessaryresiliency to thebearing 13, various appliances may be employed-for instance, as shown inFigs. 1 and 3.

S indicates a standard, the head S of which has a longitudinal slot, .9,for the reception of one oft-hepillow-blocks or bearings B, in which theguide-rolls of a paper-making machine are mounted, said slot 8 forming away upon which thebearing is adapted to ride or slide. The bearing 3,mounted on anti-friction rollers R, as set .forth, is provided withlateral projections or ears I), the standard S having like projections,8, formed at the rear end of the slot .9, to whichprojections aresecured the ends of coiled springs A, that impart to the bearing thenecessary resiliency. As shown, the bearing B is held and guided in theslot 8 ofthe supporting-standard by means of flanges b, projecting fromthe upper and lower edges of its lateral faces.

It will be found desirable to provide means [or adjusting the tension ofthe springs A, in. which case the rear end of the said springs isattached to lateral projections c of a slideblock, C, Fig. 4, said blockbeing made adjustable by means of a set bolt or screw, 1),

may be employed, as shown in Fig. 5, and instead of the spring orsprings other equivalent mechanical devices may be combined with thebearing Bas, for instance, a weighted lever, as shown in Fig. (i. Thebearing B, Fig. (5, is connected by a universal or ball-and-socketjoint, J, with a link, R, pivoted to the short arm L of a bell-crank, L,that has its fulcrum 1 upon a suitable standard or projection, S

connected with or formed on the head S of the supportiug-staudard S, thesaid head being suitably slotted for the passage of said short arm Ldown. into the slot s. The long arm L of the lever Lcarries a movableweight, \V, by means of which the resiliency of the bearing B isadjusted. It the lever L is so arranged that the link R will liehorizontal (or practically so) in the slot s during the slight movementsof the lever L, the power exerted thereby upon the bearing will bepractically unit'orm. For that portion ofthe paper length which is notyet fully pressed, and yet in a wet condition, the elastic resistance ofthe weight of the guiderolls should be equilibrated or counterbalanced,which is eit'ected as follows, referring more especially to Figs. '7, 8,and 9, in which ll are spindles or upright supports, in the upper ends,c, of which are formed conical recesses, that serve as bearin for theconical or pointed screws F, screwed in. flanges or cars If, formed onopposite sides of the pillowblock or bearing B. spindles E iscone-shaped, and is stepped in conical recesses on, formed in asupporting or bearing plate, M. In order to distribute the weight of theroll and its bearings equally upon the spindles E, and to adapt theformer for adjustment, the plates M arcmade adjustable both verticallyand longitudinally by means of the set-screws N O at opposite ends ofthe plates. The setscrew N is pointed or conical, and has its bearing ina correspondingly-shaped groove formed in the base of the standard S.The forward end of the bar M is slotted, the set-screw O passing throughthe slot into the base of the standard, whereby, as aforesaid, the bar Mis made adjustable vertically and longitudinally.

It is obvious that with the construction described the devices employedfor imparting the necessary resiliency to the bearings will take up andcounteract any shock or strain that would tend to displace theguide-roll horizon- The lower end 0' of the tally from its normalposition, the resistance of the bearings to such displacement being thatexerted by the spring, springs, or lever only, since frictionalresistance of such bearings in the slot .9 is practically annulled. Thismethod is therefore admirably adapted to prevent the ill effectsresultin from variations in the speed of the rolls of a paper-makingmachine, which may be a difierential speed in the rolls of one of theseveral groups of rolls, or a diit'erential speed in the collectiverolls of two or more groups of such. By adjusting the rolls to a maximumworkingtension and making them sensitive to'the slightest irregularityin their speed through the medium of appliances as described, the paperlength will be stretched or contracted, according as the disturbance inthe speed occurs in. one or the other set of rolls. The construction orpaper-making machines will be materially influenced by this method. Notonly are the dit'ficulties heretofore encountered of increasing thenumber and properly groupi n the drying-cylinders avoided, but th 0 useof calendering-rolls between and in rear 01:" the drying-cylinders, evenfor paper that is largely composed of wood, is made possible, and which,although very much desired, has

not been possible in machines operated at high speed and constructed asusual.

Although I have described the resilient bear in as more especiallyapplicable to the guide rolls of paper-making machines, they may beadvantageously employed in other machines where adjustable yielding orresilient bearings are desirable. 7

Having thus described my invention, what I claim is- 1. Theherein-described method of obviating the detrimental effects of avariable speed in the prime motor or operating devices or paper-makingmachines, which consists in varying the length of paper between two ormore feed or guide rolls or sets of such, according to the variations intheir speed and consequent variation in the tension of the paper,whereby said tension is maintained practically uniform, substantially asdescribed.

2. In a paper-making machine, the comb] nation of two or more guide orfeed rolls or sets of such mounted in resilient bearings, sub stantiallyas described, for the purposes specitied.

3. The herein-described resilient bearings, consisting of the pillow-block or bearing, mounted on anti-friction rollers and arranged to ridein a way formed in its support, in com bination with appliances,substantially such as described, to impart resiliency to the bearing, asand for the purposes specified.

4c. The support S, having guide-slot s, in combination with the bearingB, mounted on anti-friction rollers, and one or more springs, A,substantially as described, for the purposes specified.

5. The combination of the support S, having gui de-slot s, with thebearing B, mounted on an- IIO roll of a paper-making machine, itsbearings,

and a slotted support therefor, of verticallyadjustable spindles, uponand with which the bearing may oscillate, and appliances, sub stantiallysuch as described, to impart resiliency to the movements. of suchbearings, substantially as and for the purposes specified.

In. testimony whereof I affix my signature in presence of two witnesses.

oAnL' BOTTER.

Witnesses: v F. VoGELnn,

J. GRUND.

